Switch-lamp



(N o Model.)

0. F. JORDAN 8v L. M. GURRY.

SWITCH LAMP.

No. 828,490. Patented Oct. 20, 1885.

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UNITED STATES PATENT GEEICEI OSwALD E. JORDAN, OE ST. THOMAS, ONTARIO, CANADA, AND LEwIS M. CURRY, OE CHICAGO, ILLINOIS, SAID CURRY ASSICNOR TO HENRY A. BLACK, OE FRANKLIN CROvE, ILLINOIS.

SWITCH-LAMP.

SPECIFICATION forming part of Letters Patent No. 328,490, dated October 20, 1885.

Application tiled December 22, 1884. Serial No. 150,980. (No model.)

To @ZZ whom t may concern:

Be it known that we, OswALD F. JORDAN, of St. Thomas, county of Elgin, Province of Ontario, Canada, and LEWIS M. CURRY, of

Chicago, county of Cook, State of Illinois, have invented a new and useful Improvement in Switch-Lamps; and we declare the following to be a full, clear, and exact decription of the invenion, such as will enable others skilled in 1o the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form a part of this specification.

The objects of our invention are to so con- I5 struct a switch-lamp case and its hanger as to prevent the wrong seating of the case in said hanger also to construct the lens -v guards and lenses in such a manner that the lenses may be readily adjusted in place and held 2o firmly in position; and, further, to providethe lamp-case chimney with a detachable cap and ventilator so arranged that soot which may collect in the Chimney can be readily removed therefrom.

Our invention also has for its object the general arrangement and construction of the various parts, as hereinafter more fully described, and more particularly pointed out in the claims.

3o In the drawings, Figure 1 isaside elevation of our device with parts in Section. Fig. 2 is a plan view. Fig. 3 is a separate view of the hanger. Fig. 4 is a separate View of one of the lenses.

3 5 Heretofore it has been common to solder the guards to the lenses upon the receptacle for the oil-cup, and in case of various mishaps, which frequently occur to the cup or burner, the solder is liable to be melted and the guard 4o separated, ruining the case and resulting in the eXtinguishment of the lamp. This has been hitherto a common difficulty in all other switch-lamps. Our invention is designed to overcome this difficulty entirely and to provide a strong lamp which shall withstand any difficulties liable to occur with the cup and its contents, which shall also successfully withstand the highest wind, while securing perfect ventilation, which is not likely to get out of order in any way, and by which the oil is prevented from freezing in the cup, and the ventilation-oriiices kept open.

/Ve carry out our invention as follows:

A represents the receptacle for the oil-cup B. This cup may be of any suitable construction, and may be held in place in the receptacle in any proper manner-41s, for instance, by the springarms b, adapted to be compressed against the sides of the cup for theinsertion ofthe same in place in the receptacle when saidarms are engaged upon a supporting-fiangc, c, of the receptacle. The receptacle is provided with a series of perforations, a, to permit circulation of air into the receptacle to assist combustion.

A are the guards for the lenses C, made integral with the receptacle. These guards are each constructed with a iiange, a2, against which the periphery of the lens is engaged,

as shown in the drawings, said flange formingy a seat for the lens. The guards are also provided with any suitable number of lugs, a, which I prefer to castintegral with the guards.

VD is a spring inserted behind the lens and between it and said lugs to hold the lens in place. The lenses are constructed with slots c, corresponding to the lugs of the guard, to permit the insertion of the lenses upon their seats. When Seated the lenses may be partially rotated, and are then prevented from accidental displacement. The springs D are preferably made of greater circumference than the inner periphery of the guards, so as to force a tangential strain when in position. They are also preferably bent laterally, so as to afford points of contact with the lenses, and also with the lugs, so as to producea tension upon the lens to hold it rmly to its seat.

The lenses are inserted up through the receptacle for the oil-cup and brought to their seat upon the flanges a2. The spring is then inserted, behind it, between it and the lugs, as already described, by which the lenses are firmly held in position, and which permits their ready removal for Cleaning and for repairs, and it is evident that broken lenses may easily be replaced at any time andauby any employ.

A2 is the chimney, made integral with the guards and the oil-cup receptacle, and is provided with aseries of perforations, c4, for the purpose of ventilation.

E is the chimney-cap, provided with springarms e, adapted to be inserted within the chimney to hold the cap in place.

E is a ventilation-shield, made in any suitable manner, and connected with a sliding spindle, c. This shield is to prevent the wind entering the chimney and blowing out the light. This cap, it will be seen, is easily removed and replaced. By twisting the cap and its spring-arms e around on the interior of the chimney any soot which may collect there is readily cut out. The removal of the soot may also be accomplished by moving the ventilation-shield up and down by means of the spindle, to which it is secured.

F represents the hanger, provided with supports f and f. We prefer to constructv these arms of spring metal, but do not confine ourselves to such construction. In case the springarms are used they are preferably curved somewhat at the top, as shown, to engage against the guards to support the lamp upon the hanger. These arms, however, may be made in any suitable manner without departing from the principle of our invention.

To prevent the lamp being wrongly set in the hanger by any malicious or careless person, the guards are provided with flanges a5, so constructed and arranged as to prevent the arms of the hanger being engaged therewith, and so that the lamp can only be seated into the hanger in its proper position.

The receptacle A, the guards A', and the chimney A2, which we include under the term of .the lamp-case, are all made integral and `may be readily cast in a single piece. Being thus made, the metal case is a conductor of heat, in consequence of which the oil in the cup is kept from freezing, and the ventilation-holes also are prevented from being closed up by frost, ice, or snow. y

' By grasping the lamp-case it may be readily inserted upon hanger-arms f f of the hanger, the braces a5 preventing the seating of the lamp in the hanger in a wrong position, since if that be attempted the ends of the supporting-arms will strikeagainst said braces and effectually obstruct the case being brought to its seat in the hanger.

It is evident that the lugs a3 might be made separate. and riveted in place, if preferred, without departing from the principle of our invention.

The wick-ratchet stem B is provided with a spring, b2, inserted thereon before the milledv head b3 is engaged with the stem, the spring thus bearing against said milled head and the body of the burner in lsuch a manner as to stiffen and tighten the ratchet-stem in its engagement with the wick, so as to prevent the displacement of the wick from the burner.

This construction affords a cheap and efficient switch-lamp, not likely to get out of order, and all its parts may be readily repaired in case any disorder should by any means occur.

The spring is made with open ends, so that its circumference may be greater than the periphery of the guards and be sprung together and forced into place.

What we claim is-.

1. A switch-lamp case having guards A, provided with ianges a2 and lugs a3, substantially as and for the purposes described.

2. The combination, withI a 'switch-lamp case having guards A', of lenses seated in said guards, and springs to hold the lenses firmly to their seats, said guards being provided with lugs to engage the springs, substantially as described.

3. The combination, with a switch -lamp case having guards A', of lenses seated in said guards, and springs of greater circumference thanthe inner periphery of the guards to hold the lenses rmly to their seats, said guards being provided with lugs to engage the springs, and said lenses being slotted so as to be securely seated in said guards, substantially as described.

4. The combination, with a switch -lamp case and its chimney, of a chimney-cap removably connected therewith, said cap being provided with arms by which the soot may be removed from the interior of the chimney, substantially as described.

5. The combination, with a switch -lamp case and its chimney, of a chimney-cap re movably connected therewith and provided with arms by which the soot may be removed, and also with a ventilation-shield,substantially as described.v

6. A switch -lamp case provided with flanges a5, substantially as and for the purpose described.

7. The combination, with a hanger, of a switch-lamp case removably connected therewith, said case being provided with flanges a5, to prevent the wrong seating of the case in the hanger, substantially as described.

`In testimony whereof we sign this specification in the presence of two witnesses.

' OSWALD F. JORDAN.

LEWIS M CURRY. Witnesses:

N. S. WRIGHT, Y M. B, ODOGHERTY.

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